Keyphrases
- recommender systems
- data sets
- collaborative filtering
- open educational resources
- real world
- training data
- multimedia
- matrix factorization
- trust aware
- user profiling
- educational technology
- user model
- user preferences
- user profiles
- input data
- educational resources
- learning technologies
- distance education
- learning analytics
- information overload
- web based learning
- relevance feedback
- cold start
- cold start problem
- training set
- knowledge base